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9.3 System Start Up
Follow all codes and regulations when filling the boiler.
Use drain taps to allow system to completely drain.
Thoroughly flush the heating system before boiler is connected
and again after first heating season.
• Boiler is fitted with automatic air vent positioned on pump
Vent and is fitted with adjustable sealing cap. See Figure
9-1.
• Open central heating flow and return valves. Spindle is flat
in-line with valve.
• Open fill point valve on filling system until water begins to
flow. To aid venting boiler drain may be open until water
flows out. Close drain as soon as water appears.
• Systems using radiators to remove air - Vent each radiator
in turn, starting with lowest in the system.
• It is important the pump is properly vented to avoid
running it dry and damaging its bearings. Unscrew and
remove cap from center of pump. Use screwdriver. Rotate
exposed spindle about half turn, replace cap.
• Check operation of heating pressure relief valve. Pull lever
on top of valve upwards lifting the seat. This will allow
water to escape from system. Check water is escaping
from the system.
• Open cold water supply inlet valve. Turn on all domestic
hot water taps. Allow water to flow until no air is present.
Turn off domestic hot water taps. See page 4- Physical
Data and section 2.7 Operational Features.
9.4 Fill Condensate Trap with Water
WARNING
!
Asphyxiation hazard! Fill condensate trap before
starting boiler to avoid combustion products escaping
boiler. Failure to follow these instructions could result
in death or serious injury.
• To fill the condensate trap pour water into exhaust vent
until water begins to flow through the siphon.
• Visually inspect the siphon to ensure it is full with clean
water.
• During operation check condensate trap to ensure it
draining properly.
Condensate trap must be manually filled with water
Note
at initial start up.
9 - START UP PROCEDURE
FIGURE 9-1 Condensate Drain Assembly
Condensate Drain
Connection
37
Pour
approximately
1 cup of water
into flue way of
boiler.
Condensate Tray
Air Vent
240012564 REV A, [05/15/2019]
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